While levels of Stratus Covid are growing, the dominant strain globally remains the Nimbus variant, known officially as ...

It comes as new Covid variants continue to spread throughout the country, with Nimbus giving people razor-blade like sore throats last month. The Nimbus variant, officially named NB.1.8.1, stemmed ...

Covid Variant XFG Stratus: A new subvariant of the Covid-19 ... The last one added before it was another variant named NB.1.8 ...